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REPORT theSudden Oak Death

Sudden Oak Death

Sudden oak death threatens many of our trees. Learn to spot it and report it.

The Sudden Oak Death (SOD) is caused by the P. ramorum water mold pathogen. It is also the cause of the Ramorum Leaf Blight, Ramorum Dieback and Phytophthora Canker Diseases. SOD was first detected in the San Francisco Bay Area in 1993. It spread to a forest in Oregon in 2001. SOD is considered especially dangerous because it affects a wide variety of trees and there is no known cure. The pathogen also infects but does not kill a number of other plants.